John Gotti was as famous for his extravagant dining as he was for his dapper duds.

While he often dined at the Bergin Hunt and Fish Club in Ozone Park, Queens, the Dapper Don went big when he hit Gotham.

The Gambino boss would drop by the best Italian restaurants in town with “some business associates,” according to one restaurateur, and shell out thousands of dollars, always in cash, for the best Italian foods and wines his ill-gotten gains could buy.

Some of Gotti’s favorite Manhattan haunts included the uptown restaurants Il Valletto, Sandro’s, Rao’s and the now-defunct Da Noi, as well as several Little Italy eateries, such as Taormina, close to his Ravenite Social Club.

“He always spoke in a hushed voice and was a very good tipper,” confided an employee at Nanni’s near Grand Central.

And it was not unusual for Gotti to flip a $100 bill to a coat-check girl and tip 50 percent on a whopping bill.

The late restaurateur Luigi Nanni would have Gotti’s favorite fish, branzino – a sea bass from the Mediterranean – flown in daily from Milan. The Teflon Don liked it prepared in a cast-iron skillet.

The fish had to be alive when it arrived at Nanni’s, unlike the dead newspaper-wrapped local fish that landed on the doorsteps of Gotti’s enemies.

But his presence was not always good for business, as Da Noi owner and Gotti pal Carlo Vaccarezza discovered.

Vaccarezza was investigated by feds who claimed the don invested $1 million in his Upper East Side joint.

Vaccarezza, who could not be reached for comment, denied Gotti was a partner, His restaurant closed a short time later.

Gotti, with a little help from Salvatore “Sammy Bull” Gravano, also helped put Sparks Steak House on the map when they fed bullets to Gambino boss Paul Castellano outside the restaurant.

“We were full before it happened,” says owner Mike Cetta. “We were more full after it happened.

“I’d be a little naive to say that over the years, it hasn’t had a lasting effect.”